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J. R. HAMILTON.

ELECTRODE FOR FORMING GLOTS IN VARIGOSE VEINS.

N0. 373,399. Patented NOV. 15, 1887.

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NITED STATES ATENT Fries.

JONATHAN R. HAMILTON, OF MINNEAPOLIS, l.IINNESOTA,'ASSIGNOR OF ONE-HALFTO LYMAN R. PALMER, OF SAME PLACE.

ELECTRODE FOR FORMING CLOTS IN VARICOSE VEINS.

SPECIFICATION forming part of Letters Patent No. 373,399, dated November15, 1887.

Application filed June 27, 1887.

To all whom, it may concern:

Be it known that l, JONATHAN R. HAMIL- TON, a citizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inElectrodes for Forming Clots in Varicose Veins, of which the followingis a specification.

It is the principal object of my invention to produce a convenient andefficient device for forming clots in pile-tumors by means of anelectric current.

Theinvention is illustrated in the accompanying drawings, in Wlll('.l1

Figure 1 is a side view of the device; and Figs. 2 and 3 are transversesections on the lines 00 m and g y, respectively.

A in the drawings representsastem having its forward end, a, bent in ahalf-circle and provided with a platinum or other suitable point, a, anda shoulder, a

B is also a stem, placed parallel to the stem A, and arranged to slidein rubber or other non-conducting guides c c, that are secured to thestem A and have holes 0" 0, through which the stem B may slide. Theforward portion of the stem is crooked outwardly, as at b, enough tobring its end in line with the axis of the backward projection of thepart a, and the forward end of the stemB is also provided with asuitable point, a, and a shoulder, (L2. The shoulders a permit thepoints a only to enter the vein or tumor. The hole 0 in the guide 0 issquare, as is also the portion of the stem which slides in it, toprevent the stem from turning. An adjustable stop, d, on the stem Bregulates the extent of the forward movement of the part B, and soprevents the approach of the two points a beyond the desired limit. Thestop d may be made adj ustable by means of threads I) on the stem, asshown, or by a thumb-screw in the stop eugaging the stem.

To the rear ends of the two stems are attached suitable holders, 0,having sockets in their ends for receiving the ends of theconducting-wiresf for introducing the electric current to the stems. Thestems should have a coating of a suitable insulating substance.

In use the instrument is inserted through the anus by means of aspeculum, and the points a are adjusted, so as to penetrate the walls ofa hemorrhoid, and the electric current is then introduced, forming aclot or coagulation of the blood between the points c.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. An electrode for treating varicose veins, comprising twoconductingrods, one of which has its forward end bent backward to theaxial line of the other, means for longitudinal adjustment of the rods,and conductingwires connected to said rods, substantially as set forth.

2. An electrode consisting of the conducting-rod A, having the curvedend a, the adjustable conducting-rod B, the points a and shoulders at onsaid rods, the guides c c, and the conducting-wires f, substantially asand for the purpose set forth.

JONATHAN R. HAMILTON.

Vitnesses:

JOHN H. REED, I. H. GUNOKEL.

